CO2 Emissions Versus GDP Per Capita In 1962

The correlation between CO2 emissions and GDP per capita in 1962 was 0.86 with a p-value less than 2.2e-16.

CO2 Emissions Versus GDP Per Capita For All Years

Correlation between CO2 emissions and GDP per capita was highest in 1967.

CO2 Emissions Versus GDP Per Capita In 1967

Energy Use By Continent

Before comparing energy use in different continents, a quantile-quantile plot was used to check the normality of energy use data.

Because the data was not normally distributed, a Kruskal-Wallis test and Wilcoxon test was used was used to compare the average energy use in different continents.

Imports In Europe & Asia After 1990

A quantile-quantile plot was used to check the normality of imports data in Europe and Asia after 1990. The distribution was normal, so a t-test was used.

There was no significant difference between Europe and Asia (p>0.05) with respect to the percentage of GDP that accounts for imports of goods and services.

Countries With High Population Density

A quantile-quantile plot was used to check the normality of population density data for the top 5 countries.

As the distribution was normal, a one-way ANOVA and Tukey’s HSD test was used to compare the average population density in different countries.

Countries With The Greatest Increase In Life Expectancy

The country with the greatest increase in life expectancy since 1962 was Cambodia.